Scraper.



H. KBNDLE.

SGRAPER.

APPLICATION FILED MAR. 11, 1909.

Patented Mar. 29, 191G.

2 SHEETS-SHEET 1.

My t MMM/ ANDREW a GRAHAM c0. PNOIO-LITHOGRAPHERS.WASMNGYON. D. G.

H. KENDLE.

SGRAPER.

APPLICATION FILED MAR. 11, 1909.

Patented Mar. 29, 391i).

2 SHEETS-SHEET 2.

3141mm ton Cir HEBMIANN KENDLE, QF EATONVILLE, VJ'ASHINGTON.

SCEAEEE.

Specification of Letters Patent.

Application filed March 11, 1909.

To all whom it may concern:

Be it known that I, HERMAN KENDLE, a citizen of the United States,residing at Eatonville, in the county of Pierce and State of Washington,have invented certain new and useful Improvements in Scrapers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to automatic shut-off scrapers, and has for anobject to provide a scraper to be used in water and operated against theaction of the water, tides, surf, or heavy seas, and principally adaptedfor use in placer and beach mining.

A further object of the invention is to provide an excavating implementfor dredging and other purposes, which will automatically close whenfilled and open when empty.

To this end my invention comprises a boxshaped body, with handles at thefront and back. To these handles are attached cables for the purpose ofpulling the scraper into and out of the water. The rear end will befastened by a cable to an anchor or stationary block, located in thewater any distance from the shore and pulled to land by a cable attachedto any approved power mechanism. lVhen returning to the anchor thescraper is pulled backward, and an air-tight compartment located at therear and sufficient in size to float the scraper, when in motion,prevents the device from sinking. Gther airtight compartments located onthe top of the scraper will keep the scraper level and right side upunder all conditions.

These and various other eontrivances are illustrated and referred to inthe accompanying drawings and specifications, and are hereinafter morefully described and claimed.

In the drawings 2-Figure 1 is a side elevation of my improved scraper.Fig. 2 is a longitudinal view in section. Fig. 3 is a top plan view.Fig. l is a transverse section on line 1l; of Fig. 3. Fig. 5 is asectional view taken on line 5-5 of the lid shown in Fig. 3.

Referring to the drawings, the body portion 1 is preferably made of castmetal, but may be formed of any suitable material. The air-tightcompartments 2 are located on top of the body portion 1 and are taperedto the front to allow the forward end to sink ahead of the rear end whenit is desired to sink the scraper by pulling it forward in the water.The air-tight chambers or compartments 2 are secured to the top wall 2 1of the scraper 1 by means of brackets 31, which are fastened by suitablerivets or bolts. The walls, 25, 2G and 27 surrounding the airtightchamber 3 are preferably cast integral.

The rear end of the scraper 1 is made to taper upwardly from the bottomwall 23, for the purpose of more readily resisting the action of thewater when the scraper is pulled thercthrough. If the scraper 1 is madeof cast metal, the chambers 2 and 3 will have suitable apertures forremoving the core of the pattern, and the apertures will afterward beplugged up to make the chambers air-tight.

To the front end of the side walls of the chamber 4: is attached anrip-standing adjustable bracket 7. The two tip-standing portions of thebracket 7 are connected at the bottom by a plate 20, which is providedwith a knife edge 21. The plate abuts against the front end of thebottom wall 23 of the scraper 1, for the purpose of transmitting thestrain caused by the cutting action of the knife 20, directly to thebody of the scraper. \lhen it is desired to change the angle of theknife 20 to make it cut more or less of the class of material desired,the bolt 4L1 within the slot as of the bracket 7 is loosened. and thebracket 7 moved forward or backward on the bolt 12, thereby raising orlowering the knife 20. The side walls of the scraper 1 have their lowerfront end portions cut away as at 1 1 to allow the blade 20 to be setflush with the bottom wall 23 when so desired. To the adjustable bracket7 at the front and at the rear ends of the side alle are attachedbrackets 36, having eyelet portions 37, to which are secured handles 32.The handles 32 are provided with loop portions 35, which engage theeyelet portions 37 of the brackets 36. The handles are formed with angleportions 33, which terminate in a loop portion 3st, to which a cable maybe attached.

\Vithin the chamber at and at the rear thereof is located a pressureplate 5, supported by a shaft 19, passing through the cylindrical sleeve29 on the lower end of the pressure plate 5. The shaft 19 is supportedby being journaled in the side walls 15 of the scraper 1. At the upperend of the pressure plate 5 is formed a cylindrical sleeve 1% and a bolt15 is located within the sleeve. The sleeve 1% is cut away at the points48 to allow for the insertion of eyelet portions 13 formed on the endsof rod 28. The rods 28 are pivotally connected to the pressure plate atthe opening points 48 by means of the bolt 15. The rods 28 are alsopivotally connected to a lid 6 by means of projections 12 secured to thelatter. The rods 28 are formed with loop portions 13 at each end, and atthe front end of the rods the loop portions 13 pivotally engage theprojections 12. The lid 6 is secured to the top wall 2 of the scraper 1by means of hinged plates 9 and 10, which carry sleeve projections 39and 40 respectively. The hinged plates 9 and 10 are secured together bymeans of a bolt 11, and are secured to the lid 6 and the wall 2 1 bymeans of rivets 38.

At the rear ends of the chamber a and at the rear of the pressure plate5 is located a spring 16, formed at its bottom with a neck portion 17hearing against the vertical wall 25, and supported by a shaft 19journaled within the side walls 15 of the scraper 1. The top of thespring 16 presses against the top of the rear of the pressure plate andnormally holds the pressure plate at such an angle as to keep the lid 6,through the rod 28, in a horizontal position.

hen the scraper is being filled with gravel or other material the forceof the same acts on the pressure plate 5, and overcomes the outwardaction of the spring 16, and thereby gradually and automatically allowsthe lid (3 to close the scraper. hen the chamber 41 is approximatelyfilled the lid 6 is entirely closed, and the contents of the scraper isheld therein, and is prevented from being washed away by the action of arough sea, tides or surf.

lVhat I claim is 1. In a scraper, the combination of a buoyant housingand an adjustable knife blade for engaging earth.

2. In a scraper, the combination of a buoyant housing, an adjustableknife blade for engaging earth, and means for automatically closing thesaid housing when filled.

3. In a scraper, the combination of a buoyant housing, and means locatedwithin the same for automatically closing the said housing when filledwith earth.

14,-. In a scraper, the combination of a buoyant housing, an adjustableknife blade for engaging earth, means located within the housing forautomatically closing the same when filled with earth.

5. In a scraper, the combination of a buoyant housing formed with anopening at one end and an air-tight chamber at the opposite end.

13. In a scraper, the combination of a housing formed with an air-tightchamber on top of the said housing.

7. In a scraper, the combination of a housing formed with buoyantchambers on top and at the end of said housing.

8. In a scraper, the combination of a buoyant housing, a knife blade forengaging earth, a lid adapted to close the housing, and means within thehousing for automatically operating the said lid.

fl. In a scraper, the. combination of buoyant housing, an adjustableknife for cutting earth, and means attached to the said housing for thepurpose of pulling the housing either forward or backward.

10. In a scraper, the combination of a housing formed with an air-tightchamber at one end thereof, a lid at the opposite end thereof, and meanswithin the housing for automatically operating the said lid.

11. In a scraper, the combination of a buoyant housing formed with atapering end for the purpose of allowing the housing to be operated inwater with the least resistance possible.

12. In a scraper, the combination of a buoyant housing, an adjustableknife blade for engaging earth, a lid, means within said housing forautomatically ope ating said lid, and a buoyant chamber formed adjacentto the said housing.

In testimony whereof I aflix my signature in presence of two witnesses.

HERB h NN KFNDLE.

lvitnesses R. H. LUXD,

LL12 G'cxns'ruon.

